Home / 869,121.40-1,301,057.70-764,145.40

Finding the Fourth Proportional to 869,121.40, 1,301,057.70 and 764,145.40

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Solution

The fourth proportional to 869,121.40, 1,301,057.70 and 764,145.40 is: 1,143,910.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,121.40 : 1,301,057.70 = 764,145.40 : x
  2. Step 2: Convert to fraction form
    869,121.40/1,301,057.70 = 764,145.40/x
  3. Step 3: Cross multiply
    869,121.40x = 1,301,057.70 × 764,145.40
  4. Step 4: Simplify right side
    869,121.40x = 994,197,256,589.58
  5. Step 5: Solve for x
    x = 994,197,256,589.58/869,121.40
  6. Step 6: Final answer
    x = 1,143,910.69

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.